Analysis, modeling, and simulation of different aspects of research on renewable energies as well as for the effective use of conventional energy resources.

Design of nano structures for applications in photovoltaics
Semiconductor simulations in photovoltaics
(Software WIAS-TeSCA)

Phase transition and hysteresis in the context of storage problems
Lithium-ion batteries, hydrogen storage in metal hydrides

Electro-reaction-diffusion model for electrochemical systems
Investigation of heterogeneous electrocatalysis in porous catalysts for thin-layer flow cells

Optimization Problems for Energy Management
Hydro power management under stochastic constraints
Power trading under the terms of a liberalized market
Planning optimization of gas transport with regulated specifications
Topology optimization of wind engines under uncertainty
Process Simulation for Gas Turbines
Static und dynamic simulation
Monte-Carlo simulation
Calculation of correction curves
Process optimization



Optimization Problems in Power Management

The management of electricity portfolios includes the unit commitment problem (with respect to a network of thermal, hydro, decentralized and other power units) but also trading of electrical energy under the conditions of a liberalized power market.


Thermodynamic models for electrochemical systems

The behavior of electrochemical systems is widely investigated with continuum physics models. Applications range from single crystal electrochemistry to lithium batteries and fuel cells, from biological nano-pores to electrolysis and corrosion science, and further.


Modeling and simulation of semiconductor structures

Modern semiconductor and optoelectronic devices such as semiconductor lasers or organic field-effect transistors are based on semiconductor structures, which e.g. can be given by doping profiles, heterostructures or nanostructures. For the qualitative and quantitative understanding of the properties of these devices, mathematical modeling and simulation of the most relevant and, respectively, of the limiting carrier transport processes is necessary.



This work is focussed on the design of nanostructures and semiconductor simulations in photovoltaics as well as the production of solar silicon.


Phase transition and hysteresis in the context of storage problems

Phase transitions and hysteresis are characteristics of energy storage problems. The aim is to formulate and analyse a thermodynamical model which discribes the storage problem.


Static and dynamic simulation in process engineering

Dynamic process simulation has become an indispensable tool for design, analysis, and operation of complex plants in industry. Here initial value problems for large systems of differential-algebraic equations (DAEs) have to be solved. The simulation concept developed at WIAS exploits the modular structure of the process models to use divide-and-conquer techniques for solving the DAE system with block-structured methods. The concept is implemented in the Simulator BOP and has been successfully used in different industrial applications.


Modeling of thin films and nano structures on substrates

Thin films play an important role in nature and many areas of technological applications. In particular on micro- and nanoscales technological processes such as dewetting or epitaxial growth are used to design surfaces with specific material properties. Apart from the need to derive mathematical decriptions, analyis and numerical simulation, that serve to accelerate the development of new technologies, it is also exciting to understand material behaviour on these small scales.